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Finding the Fourth Proportional to 627,861.72, 866,444.64 and 341,382

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Solution

The fourth proportional to 627,861.72, 866,444.64 and 341,382 is: 471,104.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,861.72 : 866,444.64 = 341,382 : x
  2. Step 2: Convert to fraction form
    627,861.72/866,444.64 = 341,382/x
  3. Step 3: Cross multiply
    627,861.72x = 866,444.64 × 341,382
  4. Step 4: Simplify right side
    627,861.72x = 295,788,604,092.48
  5. Step 5: Solve for x
    x = 295,788,604,092.48/627,861.72
  6. Step 6: Final answer
    x = 471,104.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.